NEET UG · Physics · Dual Nature of Radiation and Matter
Threshold Wavelength Condition
NEET asked Threshold Wavelength Condition twice, in 2020 and 2026: 2 of the 1,875 questions in the 10 papers from 2017–2026. It belongs to Photoelectric Effect, in Dual Nature of Radiation and Matter (Physics). The longest wait between two papers asking it was 6 years.
Updated 2026-10-08
- Times asked
- 2
- in 2017–2026
- Papers
- 2
- of 10
- First asked
- 2020
- last in 2026
- Chance next paper
- 6%
- calibrated historical rate
Questions on this idea, by paper
2017–2026. 2020 and 2026.
How NEET framed it
One-line MCQ is the usual form. Skill tested: application.
- Effect of frequency and intensity on photocurrent
- Compare stopping potentials by threshold wavelength
Chance asked next paper 6%
Every question
All 2 questions
From the official NEET UG papers, newest first. Open one for the full question, the options and the official answer.
- 2026 Q18A ray of light with wavelength is incident on three different photo-electric cells namely 1, 2 and 3. The threshold wavelength…One-line MCQ · Medium
- 2020 Q157Light of frequency 1.5 times the threshold frequency is incident on a photosensitive material. What will be the photoelectric current if…One-line MCQ · Easy
Same topic
Other ideas in Photoelectric Effect
Photoelectric Effect has 13 ideas NEET has asked; 4 of them came up in more than one question.
- de Broglie Wavelength of Particles4× · 2024
- Photon Momentum and Effective Mass3× · 2026
- Effect of Intensity vs. Frequency2× · 2026
- Inverse Photoelectric Effectonce · 2023
- Work Function and Thresholdonce · 2023
- Solving Two-State Photoelectric Equationsonce · 2022
- De Broglie Wavelength of Emitted Photoelectrononce · 2021
- Photon Emission Rate from Poweronce · 2021
- de Broglie Wavelength of Accelerated Electronsonce · 2020
- eV to Joule Conversion in Photoelectric Equationsonce · 2020
- De Broglie Wavelength of Photoelectrononce · 2019
- Maximum Velocity of Photoelectronsonce · 2018